Air filter



April 13 192e. 1,580,268.

lA. -F. y'PAJALIG ,AIR FILTER Filed March 2:5.'*1925 UNITED *ST ANTHONYze'. PAJALIC,

Ior nnraorr, MICHIGAN.

AIB FILTER.

application mea Marien 2a, 1925.. senat No. 17,696.

To all 'whom t may concern.'

Be it known thatI, ANTHONY F. PAJALIG,

a citizen of the United States, residing at Detroit, in thecounty ofWayne and State of Michigan, have invented certain new and usefullImprovements vin yAir "Filters, of which the following is aspecification, reference being had ltherein to the accompanyingdrawings.

This invention relates to an air filter that may be advantageously usedat the alr in.-

, take connection of a carburetor forming and imurions' to an engine, byexcluding `dust and forelgmmatter, the accumulation of carbon incylinders and about valves 1sv -reduced to a. minimum; the-:scoring ofeylin'- der walls prevented, and'ahigherA degree of efficiency attainedin connection with the engine.

A further objecty of this invention 4is lto provide a sheet metal airfilter wherein casings and other members 'are arranged to provide asinuous, tortuous, or staggered path for air, so that those particlesheavier than air will be baiiied and caused to leave the devicebefore`entering a carburetor or other engine part.

The above and by hereinafter specifically described and then otherobjects are attained claimed. Reference will now be had tofthe drawingwherein Figure 1 is a horizontal' filter longitudinal sectional view oftheair of the Fig. 2 is a vertioal'sectional view same;

Fig. 3 is a cross sectional view of the air ltr taken on the lineIII-III of Fig. 1; an

Fig. 4 is asimilar view taken on the line IV--IV of Fig. 1.

To put my invention into practice, I provide an outer casing composed ofa front part 1 and a rear part 2, said casing parts eing arranged end4to end with the confronting edges thereof bell shaped, as at 3,

and spaced apart so as to provide an annular a mechanical constructionthat will-"Ba,

air inlet opening 4, which also serves as a' dirt outlet. The front partof the casing is bell shaped and'closed, as at 5, and the rear part 2ofthe casing has a large opening 6, into which extends an air loutletconduit, or carburetor connection 7, said connection being centered 'inthe opening 6 by inwardly projecting brackets 8, forming part of thecasing rear part l2. s i

The-casing parts, 1 and 2, are formed With annular walls 9, andlseatedon these walls are the corner portions 10, of a substantiallyrectangular` inn'cr casing .11, said casing having its front endformedwth flanges 12, that may besoldered riveted, or otherwise'connected to the front The rear'part cf the inner casing 11 ex tendsinto the rear part 2 of the outer easing.;v

and 'is formed with a Wall 13 having an opening 11i in which is fixedthe inner end of the conduit, or carburetor connection 7 v In theforward end of the innercasing 11 v1s a' concave-convexe balie member'lprovided with diametrically opposed arms 16 part 1 of the casing.:

which extend into the side walls ofthe inner caslng 11, and-.support thebaffle member y coaXially of the conduit 't'. l

Connected to a Wall of the inner casing 11 is a hood 18 having its frontend abutting a ange 12 of the casing and its rear end open. Attached tothe hood 18, and comlmunicating therewith is an air outlet conduit 17,which extends between the outer casing parts, 1 and 2, and is adapted tocommunicate with a breather, (not shown). The hood 18 will revent crankcase oil or other v,matter from eing drawn into the carburetorconnection 7.

j Air i-mpinges against the front part 1 "0f the outer casing and airenters the annular opening 4 where a portion of the air may pass throughthe rear part 2 of the outer casin and out of the opening 6, carryingwith it any dirt or foreign matter. vOther quantities of air enteringthe annular opening 4 may pass between the inner casing 11 and theannular wall 9 of the casing :front part 1. From this 'part of thecasing the air passes between the baflie member 15 and the walls of thecasing 11, and enters the conduit or carburetor connection 7, and 'thebreatherconduit 17. When the air impino'es against the baliie member 15,dirt and forelgn matter will be defiected downwardly into the frontcasing part 1 and out of the opening 4.

From the foregoing,- it` will be noted that the air is filtered as ittravels in a tortuous path in the device, and thatthe outer casing partsare supported through the medium of the inner casing mounted on theconduit or carburetor connection. The breather conduit may alsocooperate'with the carburetor connection in supporting the devicewithout additional supportingmeans.

It is thought that the utility of myv invention will be apparent withoutfurther description, and while in the drawing there is illustrated apreferred embodiment of my invention, itisto be understood that thestructural elements are susceptible to such variations as arepermissible by: the appended claims.

What I claim is :f Y

l. An air filter of the type described comprising a two-part outercasing having a front closed air detiecting end, an inner casingconnecting and maintaining the parts of the outer casing spaced apart, abaiile in said inner casing, and an outlet connection coaxially of saidcasings' and fitted in a wall of said inner casing.

2. An air filter as callcdfor in claim 1 wherein said two-part outercasing provides a continuous side air intake opening, and said inner'casing affords marginal openings establishing communication betweensaid casings.

3. An air filter comprising an outer cylindrical casing having a sideair inlet opening and a front closed end, an air outlet y memberextending into the rear end of said outer casing, an inner rectangularcasing having corner portions connected to said outer casing and arearwall connected to said air outlet member, and a baffle in'saidrectangular casing and coaxially of said air outlet connection. l

4. An air filter comprising a two-part outer casing closed at its frontand having a side openlng for the outlet of dirt and the inlet of air,aninner casing extending from within one part of said casing into theother part thereof land serving as a baffle at the side opening of saidoutercasing and communicating with a part of said outer casing at thefront end ofthe inner casing to admit air to said inner casing, and anair outlet connectionA connected to said inner casing.'

5. An air filter, as called for in claim 4, and a bafiie in said innercasing presenting a, convex face to said air outlet connection.

6. 'An air filter of the type described comprising a two-part outercasing having a front closed end and a side opening adapted to receiveair, an inner casing adapted to receive air from the outer casing, anout-- let connection for saidinner casing, a hood on said inner casingcommunicating with said 'outer casing, and an air outlet conduitconnected to said hood and extending between the parts of said casing.

7. An air filter comprising a closed front casing part, an open rear`casing part, said casing parts cooperating in providing a side air inletopening, an inner casing closed to the 'rear casing part. and open tothe front casing part and adapted to receive air therefrom, said rearcasing part affording a passage for air therethrough, and a connectionwith said inner casing producing an induced current of air supply bywithdrawal of air from the air passage of the rear casing part.

8. An air filter comprising an outer casing open at its side and rearonly, an inner casing and connection cooperating with said outer casingin providing an air passage through said outer casing, said inner casinghaving its front end alone establishing communication between said outercasing and said connection so that aninducedcurrent in said connectionwithdraws air from the air passage of said outer casing.

In testimony whereof I afiix my signature.

` ANTHONY F.' PAJALIC.

